Typewriting machine



1940- R. G. THOMPSQN 2,185,742

TYPEWRITING imcamE Filed April 1, 1937 2 Sheets-Sheet 1 nun-"MHZJun-11mm INVENTOR RUSSELL GJHOMPSON ATTORNEY Jan. 2, 1940. R G, THOMPSON2,185,742

TYPEWRITING MACHINE Filed April 1. 1931 2 Sheets-Sheet 2 INVENTORRUSSELL GTHOMPSON BY/{ sg g" TTORNEY Patented Jan. 2, 1940 UNITED STATESTYPEWRITING MACHINE Russell G. Thompson, West Hartford, Conn, as-

signor to Underwood Elliott Fisher Company. New York, N. Y., acorporation of Delaware Application April 1, 1937, Serial No. 134,324

11 Claim.

This invention relates to typewriting and book. keeping-machines andwith regard to certain more specific features thereof to denominationaltabulator mechanism adapted to be power-actuated in such machines.

In U. S. patents to McLaughlin 956,144 and Helmond 1,858 denominationaltabulators are shown in which a row of keys are adapted for selectivedepression of spring-pressed levers which in turn move denominationalreeds or blades at the rear of the machine into-position to engagecolumn or carriage stops set on a carriage rack. Provision is also madefor releasing the carriage from its escapement when a key is depressedso that the carriage may be moved by its spring or other motor meansuntil a set stop on the carriage engages a denominational-tabu- Qlatorstop which has been moved to stop position.

The present invention employs keys, levers and go reeds or blades of thesame general type shown in these patents but provides for the selectivemovement of the reeds or blades to stop position by power from anelectric motor or similar prime mover and also provides for theirrestoration 5 automatically at the end of the tabulating movement. Theinvention further provides for the restoration of any set stop by meanscoming into operation at the line-end or prior to carriage return sothat no blade is in position to interfere 30 with the return of thecarriage. I

The invention has, therefore, as one of its objects, to provide asimple, inexpensive and reliably operative device for power-actuating aplurality of denominational-tabulator stops.

35 Another object is to provide a simple latching.

mechanism for the stops which permits them to be unlatched by collisionof the carriage in its tabulating travel.

Still another object is to provide a reliably 40 operative device forclearing all stops from the return path of the carriage.

Other objects will be in part obvious and in part pointed outparticularly as the description of this invention proceeds.

45 In the accompanying drawings wherein is shown one of various possibleembodiments of the invention:

- Fig. 1 is a view in side elevation, with side wall broken away inpart, of a typewriting machine 50 embodying the invention.

Fig. 2 is a view in perspective showing the denominational-tabulatormechanism shown in Fig. 1.

Fig. 3 is a view in perspective of a part of the 55 escapement control.

Fig. 4 is a view in perspective of a part of the clearing device for thedenominational-tabulator s ops.

Fig. 5 is a view in perspective of the operating mechanism for thetabulator stop clearing device 5 shown in Fig. 4.

Referring now more in detail to the drawings, a typewriting machineframe is indicated generally at made up of left and right side walls 2|and 22 connected at the rear by a plate 23 and 10 at the front by theusual front bar, not shown, and-an anchor bar 24. About midway betweenthe front and rear of the machine the two side walls are connected by abackbone 25 and cross bars 26 and 21. A comb-slotted plate 29 is con- 15nected at one end to-a rib 30 projecting inwardly from the side wall 2|near the front of the machine and has its other end connected to asimilar rib extending inwardly from the side wall 22.

As shown clearly in Fig. 2 of the drawings, a go plurality of key levers3| are positioned for guidance in slots 32 in the plate 29. One of theselevers 33 is for the purpose of setting the desired column or carriagestops as will be more fully described later, and another one of the g5levers 34 has as its purpose the clearing of any set column or carriagestops as will be described later. The other levers 35 are the variousdenominational key levers having keys 36 and these levers are suitablybent at the rear of the comb 30 plate 29 so that beyond the plate theyare grouped substantially at the center of the machine in slots 31 in aflange 38 of the backbone 25. A fulcrum pin 40 passes through the flangeof the backbone and through all of the levers 33, 34 and 35. The 35 combplate 29 has a short rearwardly extending flange 4| provided withflngers 42 to which are attached ends of individual pull strings 43, theopposite ends of which are attached to hooks 44 formed on the levers 33,34 and 35. These springs 4g serve to hold the key levers normally up inthe comb slots 32 with their hook portions 44 hearing against aresilient stop member 45 suitably secured to the rear of comb plate 29in position to present the engaging part of resilient member 45 45suitably below the top of the comb slots. It will be understood that thevarious character keylevers of the typewriter are also pivoted by pin 40in flange 38 of the backbone. Some of these key levers are indicated inFig. 2 at 46 as between 50 the grouped denominational-tabulator leversand others are arranged in the backbone on opposite sides of the group.

The "Tab-set lever 33 has an extension 41 rearwardly beyond the fulcrumpin 40. This extension is joined by a connector 48 to a lever 49 pivotedon the cross bar 21 at 50 and extending parallel to the bar. An oppositeend 5| of this lever is connected by a link 52 to one end of a lever 53pivoted on a shaft 54 which is journaled in arms 55 projecting forwardlyfrom the rear plate 23 of the machine. The other end of lever 53 entersa slot 56 in the lower end of a magazine 51 which latter is suitablysecured to the frame of the machine in an aperture 58 in back plate 23.

The slot 56 of magazine 51 also receives the lower end 60 of an anglemember 6| which rises in the magazine, turns forwardly andterminates inan enlarged end 62 positioned in a slot 63 of a universal plate 64 theconstruction and operation of which will be described later. Thefunction of the universal plate 64 insofar as the angle member 6I isconcerned is merely to provide a guide for the upper end of the member6| in an upward and forward direction of movement. A pin 65 passesacross the magazine and is suitably secured therein. The angle member 6|has cam slot 66 through which pin 65 passes. The enlarged end 62 ofmember 6| is pivotally connected at 61 to a bail-shaped member 68 shownin Figs. 1 and 2 of the drawings by dot-and-dash lines. Thisbail-shapedmember comprises an arm 10 extending from pivot connection 61 to apivotal bearing on a shaft 1| which latter extends across the magazineand is suitably journaled in ears one of which is shown at 12 in Fig. 2.The arm 10 passes suitably beyond its journal on the shaft 1 I, thenturns and extends parallel with the shaft and emerges, at the other sideof the magazine, with a setting finger 13 .having at this point anotherpivotal mounting on shaft 1 I.

The angle member 6| having its lower end above the end of the lever 53in slot 56 is adapted to be elevated whenever the Tab-set lever 33 isdepressed. Its elevation is permitted by cam slot 66 and forwardmovement must necessarily take place owing to the connection withballshaped member 68 pivoted on shaft 1 I. Elevation of the member 6|,therefore, rocks the bailshaped member 68 and moves the setting finger13 rearwardly. Thus any one of a multiplicity of carriage or columnstops which is in line with the setting finger may be moved rearwardlyin a stop-carrying bar 8| extending lengthwise of the carriage. The baris secured in arms 82 at opposite ends of the carriage.

A conventional typewriter is indicated in Fig. 1 at 83 having a carriagerail 84 mounted on antifriction rollers 85 in a track 86 which in turnis pivotally supported upon a balancing or caserhift frame 81 permittingcase-shifting movements of the carriage. The carriage is equipped with arack 88 which is in fixed relation with its rail 84 and the teeth ofwhich engage a pinion 90 at the upper end of a shaft 9|. The latter issupported for rotation in a bracket 92 secured to the forward side ofcarriage track 86. A centertie 93 is considered for the purpose of thiscase as a frame part although adapted for slight fore and aft adjustmenton the frame and the center tie is apertured at 94 to receive the shaft9| which has a lower bearing in a bracket arm 95. A carriage escapementwheel 96 is fixed on the lower end of shaft 9| and is under control ofdogs 91 and 98 mounted on a rocker frame I00 adapted to be rocked on thepivots IOI and I02 (see Fig. 3) to alternately engage the dogs 91 and 98with teeth I03 of the escapement wheel 96.

The carriage 83 is under the usual tension for operating in aletter-feed direction either by the conventional spring motor and tapeconnection or by other motor means. The letter-feeding movement of thecarriage is controlled by the rocking of frame I00 and the dogs aredisengaged from the escapement wheel 96 for tabulating operation, all aswill be particularly described later herein.

For the purpose of restoring the column stops 80, which have been setinto stop position by operation of the "Tab-set key and the finger 13the Tab-clear key lever 34 is provided. Depression of the Tab-clear" keyraises the rear end of lever 34 which is joined by a connector I04 toone end of a lever I05, which is pivoted by a stud on bar 21 in the samemanner as the lever 49 of the Tab-set mechanism. The other end of lever.I05 connects with a lever I06 pivoted on shaft 54 and having itsopposite end in one of the slots 56 in the lower end of magazine 51.This slot is at the extreme left of the magazine, as viewed in Fig. 2,and it receives the lower end of a reed or blade I 01 which extendsupwardly in the magazine and is guided in one of a plurality of slotsI08 cut in a cross bar I09 extending across the upper mouth of themagazine and suitably secured thereto.

At the top of the magazine a plate I I0 is secured at an inclinationupwardly and forwardly from the rear of the magazine. This plate isprovided with a plurality of slots III cut parallel to the face of theplate and therefore extending at an upward angle from the rear of themagazine. The reed or blade I01 has at its lower end a slot similar tothe inclined slot 66 in angle member 6| and its upper end is inclined tofit one of the slots III in plate N0 of the magazine.

Thus it will be seen that raising of the rear end of lever I06 bydepression of the Tab-clear key will elevate the reed I01 in themagazine and its inclined top end plus its pin and cam slot connectionwill cause it to be urged forwardly. The upper end of this reed isprovided with a lateral extension having a cam face I I2 receding towardthe left of the machine and when the reed is set into stop position, asdescribed, a return of the carriage by hand or by power from itscarriage return position at the right of the machine will cause the camface II2 to engage all of the set carriage stops 80 in its travel andreturn them forwardly to normal positions of disengagement.

The described means of setting the carriage stops and the clearing ofthe same by the manual depression of keys are not claimed in themselvesas any part of the present invention except as these mechanisms enterinto combination with the devices which will now be described to carryout in completeness the function of a denominational tabulator for apower-driven machine.

In the preferred form of this invention shown in the accompanyingdrawings and described herein, a constantly rotating prime mover ordriving member is shown. It is not intended to limit the invention as toits power operation to a constantly operating or rotating prime mover asit is conceivable that the invention in many of its broader aspects isapplicable to a motor means which may be intermittently energized orbrought into operation by the depression of any of thedenominational-tabulator keys or some other key or switch, or possiblyautomatically energized or coupled upon the completion or during theprogress of some other operation of the machine. In the form shown theprime mover is a rotating toothed shaft I20 constantly driven from asource of power such as an electric motor (not shown). Teeth In of thisrotating shaft are adapted to engage teeth I22 of a pawl I23 pivotallyconnected at I24 to a vertically movable driven member I25. This drivenmember is provided with a slot I26 at its upper and through which a pinI21 passes, and this pin may pass entirely across the machine in arearwardly extending flange I of the backbone 25. The pin may serve as aguide or fulcrum for a multiplicity of similar driven members oractuators for..the power operation of the type-bars, the carriagereturn,case-shift, back-spacer and any other function that it is desired toform by power. To this end the flange I28 of the backbone is combslottedand each actuator, as is the case with actuator I25, is guided in one ofthe slots. The actuator or driven member I extends downwardly in therear of a lower flange I30 of backbone 25 and a plate I3I secured to theunder side of the flange and has a diagonal leg I32 forwardly extendingand provided with a hook I33. This hook is connected by a spring I34 tothe plate I3I which tends to hold the member I25 forwardly away from thedrive roller, as shown clearly in Fig. 1 of the drawings.

When, however, the member I25 is swung rearwardly around the pin I21,teeth I22 of pawl I23 are engaged by the teeth of the roller I20 and theassembly of actuator and pawl is moved downwardly, slot I26 riding alongpin I21. A notch I35 in the upper part of the driven member receives therounded end II5 of an arm II6 which has its other end II1 secured to theend of shaft 54. Thus the shaft 54 is rocked in the direction of thearrow (Fig. 2) and carries with it spaced arms I I9 and I I9 suitablysecured to the shaft. The ends of these spaced arms are connected by arod I29.

When the driven member I25 is picked up by the roller I20 and moveddownwardly this movement continues until a cam edge I engages a roundedhead of an adjustable knock-off screw I4I secured in cross bar 26.Further continued downward movement causes the driven member I25 to beurged forwardly until pawl I23 is disengaged from the roller whereuponspring I34 restores the driven member to its normal position shownclearly in Fig. 1 of the drawings. Thus the rod I29 is oscillated eachtime the pawl I23 is engaged with roller I20. The mechanism justdescribed is a common actuator for all of the denominational-tabulatorstop-blades. These stop-blades, indicated at I42, are in the preferredform shown ten in number and of similar configuration to the reed orblade I01 except that they do not have the lateral extensions I I2. Eachhas its lower end in one of the slots 56 at the bottom of the magazine51 and its-upper end in one of the slots III of the plate IIO. Each reedor blade I 42 has a slot corresponding to the slot 66 of angle member6|, so that as any blade or reed I42 is lifted from the bottom it willrise and move forwardly in the magazine into a position to intercept anyset carriage stop 80. For raising the blades I42 a series of levers I 43are grouped centrally of the machine between levers 53 and I06 and thelevers I43 are individually pivotally mounted on shaft 54. Each leverI43 has its forward end pivotally connected with a swingable coupler inthe form of an arm I44 having a hook on its lower end as indicated atI45. Each arm I44 is held normally with its hook I45 out of engagementwith the rod or bar I29, by a connector I46 extending from one arm of abell-crank-lever I41. These levers are mounted in a comb-slotted flangeI31 of cross bar 21 on a pivot pin I30 passing through the flange. Theother arm of each lever I41 is joined by a connector I40 respectivelywith one end I49 of each denominational-tabulator-stop key-lever 35. Asheretofore described, each of the latter have their key-ends heldupwardly against stops by springs 43, and thus, through the connectionsjust described, the arms I44 are normally held rearwardly to anextentpermitting oscillation of rod I29 without engaging any of thehooks I45. When any one of the denominational-stop-lever keys isdepressed its connected bellcrank-lever I41 is rocked to swing itsparticular connected coupler arm I44 forwardly. and position the hookI45 thereof below bar I29. If the bar is then oscillated it will movethe selected coupler I44 downwardly rocking its connected lever I43 onshaft 54 thus elevating the rear end of the lever and elevating theblade I42 positioned in the same slot 56 in the magazine. Depression ofa particular den0minational-tabulator-stop keylever 35 not only moves aparticular coupler I44 into coupling relation with the actuating mechanism including the rod I29, but also by means of hook 44 rocks auniversal bar I50 which is common to all the levers 35 and institutesthe operation of the actuating mechanism, as will now be described.

The universal bar I50 underlies all the hooks 44 of levers 35. It isfixed 6n a shaft I5I journaled in the opposite side walls of themachine. At the right side of'the machine the shaft has a fixed arm I52which is connected by a link I53 with a dog-carrying lever I54 havingone end pivoted on pin 40. The lever I54 is suitably guided in one ofthe slots 31 in the backbone and its range of motion is limited by upperand lower stops I55 and I56 respectively, which stops extend between theside walls of the machine and also serve to limit the range of motionfor the various type-bar selecting levers of the machine. The lever I54is guided in a slot I51 in the stop member I55.

Lever I54 has a lower rearwardly extending arm I59 at the rear end ofwhich is pivotally mounted at I60 a dog I6I, a nose I62 of which isnormally held slightly out of engagement with driven member I25 by meansof a spring I59 connecting the lever to an anchor plate I63 on cross bar24. The dog I6I is normally held in a substantially horizontal positionby a spring I64 connecting a forward end I65 of the dog with a lug I66formed on the arm I58 of lever I54. This spring causes the nose I62 ofthe dog to rest upon a small coil spring I61 which extends through thecomb-slotted portion of the backbone 25 and serves as a cushioning stop.From the foregoing it will be obvious that depression of any key-lever35 will swing the universal bar I50 and rock lever I54 around pivot pin40 carrying arm I 58 of the lever rearwardly and engaging the nose I62of dog I6I with the driven member I25 which will then be rocked aboutpivot pin I21 until teeth I22 of pawl I23 are engaged with teeth I2I ofroller I20. The driven member or actuator I25 will be moved down by theroller until throw-off screw I4I engages with cam face I40 whichdisengages the teeth and allows spring I34 to return thedriven memberupwardly. If the key of lever 35 is held depressed a shoulder I10 ondriven member I25 will engage the nose I62 of the dog in the returningmovement. The dog is free to rotate on pivot I60 and will assume aninclined position with its nose I62 held on shoulder I10 until such timeas the pressure on the key-lever is released and spring I59 isallowed toreturn lever I54 to original position. When this happens the dog I6Iwill ride oil! of the shoulder I10 and spring I64 will return it tohorizontal position with its nose against the spring I61.

It will be obvious from the foregoing that whichever one of thedenomination-tabulatingstop levers is depressed a corresponding couplerarm I44 will be moved into position for the actuation of the particularlever I43 to which the coupler arm I44 is pivoted and following this amovement of the universal bar by the same movement of the key-lever 35couples up the actuating mechanism to oscillate bar I29 and rock theselected one of the group of levers I43 to elevate its associated bladeI42. 1

To hold the blade in elevated position a simple latching mechanism isprovided which includes a shoulder I80 provided by notching the rightside of each blade I42 as indicated clearly at I8I in Fig. 4 of thedrawings. Between the slots I08 of bar I09 which extends across themouth of magazine 51 are teeth I82 resulting from the slottingoperation. As the blades I42 are elevated and moved forwardly notch I8Icomes into matching position with one of the teeth I82 on bar I09 andmeans are provided for giving the blade a slight lateral movement atthis time to snap the shoulder I80 over the tooth I82 sufficiently tohold the blade I42 elevated even though the actuator mechanism has beenoscillated to its return position.

The slight lateral movement to effect latching may be from either orboth of the following described means. Each blade I42 has a forwardlyextending arm I83 to which is connected a return spring I84 the lowerend of which is secured to an anchor clip I85 around a pin I86 thatpasses from one side of the magazine to the other side in ears I81. Theforward ends of arms I 83 underlie the universal plate 64 and this plateis itself held in down position, as shown in Fig. 1, against the ends ofthe arms I83 by a spring I88.

The springs I84 may be connected from the arms I83 to the clip I81 on aslight diagonal to give a bias to the blades I42 tending to urge theshoulder I80 over the tooth I82, but more particularly the actiondepends upon positioning the slotted plate I09 so that the grooves orslots I08 are slightly out of line with the upper and lower slots IIIand 56 of the magazine. By this means the long thin reeds I 42 may beslightly flexed so that their inherent resilience is depended upon inlarge part to cause them to snap the shoulder I80 over tooth I82 andlatch the reed.

When any denominational-tabulator stopblade is elevated its arm I83rotates the universal plate 64 in a clockwise direction, as viewed inFig. 1, carrying with it an arm I90 secured to the under or rear side ofthe universal plate. This arm is pivotally connected at I9I with adownwardly extending link I92 which rides at its lower end on pin 65 andwhich carries a stud I93 positioned in a slot I94 of an arm I95 pivotedon the frame at I96. Downward movement of the link I92 occasioned byrotative movement of universal plate 64 swings the arm I95 downwardly orclockwise as viewed in Fig. 1 around its pivot I96 and against theaction of a return spring I91. The arm I95 has an ear I98 which bearsagainst a tall 200 of dog 91 of the escapement mechanism. The dog isrocked by the arm I96 against the opposition of a return spring 20I torelease its tooth from the escapement wheel 98, and to hold it releasedso long as the blade I42 remains elevated in latched position asdescribed. This, of course, frees the carriage to the action of itsmotor for a tabulating run until one of the carriage stops 80 collideswith the particular denominational-tabulator stop which has been latchedin stop position. The force of the collision is sufficient to releasethe blade from its shouldered engagement with tooth I82 whereupon theblade is instantly returned downwardly by its spring I84. As the blademoves downwardly, universal plate 64 follows under the action of itsspring I88, lifting link I92, swinging arm I95 in the opposite directionassisted by spring I91, which releases dog 91 to the action of itsreturn spring 20I and restores the dog to its control of the escapementwheel. Thus the carriage is stopped in deilred position and thedenominational-tabulator stop is removed from the path of the carriagestops.

To avoid the possibility of interference with the return of the carriageby reason of some one or more of the denominational-tabulator stopbladeshaving been actuated after the last carriage stop has passed themagazine 51, an angle member 205 is arranged over the bar I09 and heldin position by a keeper 206 fastened to the bar by a screw 201. Theangle member 205 is suitably cut away as indicated at 208 to permit ofits free lengthwise movement. The right hand end of the angle member205, as viewed in Fig. 2 of the drawings, is provided with an ear I12and a rod I13 projecting from the ear. This rod has a loose guidebearing in a bracket I14 projecting forwardly from the back plate 23 andtoward its outer end the shaft I13 is secured in an angle member 2I0which is loosely pivoted on an arm 2| I which is in turn fixed on ashaft 2 I2 suitably journaled in flanges in the back plate 23. The shaft2 I2 is rocked by an arm 2 I 3 which is adapted to be moved slightlyunder control of the carriage as it approaches its line-end. In theevent that a power-driven carriage-return mechanism is used this arm mayalso be rocked at or about the time that the carriage commences itsreturn movement. Whichever actuating means is used the rocking of shaft2I2 will be translated into a lengthwise movement of rod I13 and anglemember 205. Teeth 2I5 of member 205 are normally positioned over teethI82 of bar I09 so that any set denominational-tabulator stop liesbetween adjacent teeth 2I5. Movement of angle member 205, therefore,dislodges any set blades I42 from their shouldered engagement with teethI82 allowing return springs I 84 to retract them from stop position.

Fig. shows the operating mechanism for the arm 2I3 by which the arm isrocked slightly by a conventional margin stop 220 on the typewritercarriage. The arm 2I3 is connected at its free end by link 22I toanother arm 222 pivoted at 223 to another arm 224 fixed on a shaft 225journaled in flanges on the rear wall 23. The link 22I has a stop lug226 against which the margin stop 220 strikes in the movement of thecarriage to line end position. This moves the arm 2I3 and rocks shaft2I2 to move rod I13 and dislodge blades I42 as above described.

From the foregoing description of the construction and mode of operationof the invention it will be apparent that the operator of the machinemay set any number of column or carriage stops by passing the carriageacross the machine and operating the Tab-set" key lever at desiredpoints and that subsequently the operator may select anydenominational-tabulator stop for power operation by depressing any key36 of keylevers 35. This throws in a coupling unit corresponding to theparticular key actuated thus selecting it for power actuation by anactuating mechanism set in operation by the same depression movement ofthe same key. Once a particular denominationalatabulator key-lever isdepressed the operation of the machine is automatic. The selecteddenominational-tabulator stop is elevated and automatically latched, theescapement is disconnected, freeing the carriage to the force of itsmotor, and upon collision of the carriage stop with the particulardenominational-tabulator stop which has been set the latteris unlatchedand returned to original position and the carriage is simultaneouslyagain brought under the control of its escapement.

Ordinary letter spacing escapement is effected by movement of auniversal bar 2l0 which reciprocates a rod 2H for rocking the dog frameI on its pivots IM and I02. In the preferred form of the invention shownin the drawings the univ'ersal bar 2 I6 is actuated by any of aplurality of actuators on the general order of driven member I25 all'ofwhich are arranged in a row across the machine and pivotally mounted onpin I21, and each of which is adapted for movement into engagement withthe roller I20 by the various character key levers or space bar lever ofthe machine which carry dogs corresponding to dog l6l.

What is claimed is:

1. In a machine of the character described, a frame, a motor-drivenescapement-controlled carriage movable across the frame, a magazine insaid frame, a group of denominational-tabulator stops normally held insaid magazine out of carriage-stopping position, settable stops on thecarriage, actuators respectively for the denominational-tabulator stops,coupling means for selectively coupling said actuators to apower-operated device, a plurality of denominational-stop key-leversspring held in position in the frame, means connecting said key-leversrespectively to said coupling means, a universal bar movable by saidkey-levers, a power-driven member mounted for movement by said universalbar, a powerdrive element adapted to be engaged by said driven member insaid movement, means connecting said driven member to an actuator for adenominational-tabulator stop through a selected coupling to therebymove the stop to operative position; the foregoing being so arrangedthat movement of a key lever first eifects the selective coupling andthen causes said engagement of the driven member to .move the coupledstop, and means for disengaging the driven member when the stop arrivesat operative position.

2. In a machine of the character described, a frame, a motor-drivenescapement-controlled carriage movable across the frame, a magazine insaid frame, a group of denominational-tabulator stops normally held insaid magazine out of carriagestopping position, settable stops on thecarriage, actuators respectively for the denominational-tabulator stops,coupling means for se lectively coupling said actuators to apoweroperated device, a plurality of denominationalstop key-leversspring held in position in the frame, means connecting said key-leversrespectively to said coupling means, a universal bar movable by saidkey-levers, a power-driven member mounted for movement by said universalbar,

a power-drive element adapted to be engaged by said driven member, meansconnecting said driven member to an actuator for a denominamoved intolatching position and releasable by lateral pressure on the stop.

3. In a machine of the character described,-

a frame, a motor-driven escapement-controlled carriage movable acrossthe frame, a magazine in said frame, a group of denominational-tabulatorstops normally held in said magazine out of carriage-stopping position,settable stops on the carriage, actuators respectively for thedenominational-tabulator stops, coupling means for selectively couplingsaid actuators to a power-operated device, a plurality ofdenominational-stop key-levers'spring held in position in the frame,means connecting said key-levers respectively to said coupling means, auniversal bar movable by said key-levers, a power-driven member mountedfor movement by said universal bar, a power-drive element adapted to beengaged by said driven member, means connecting said driven member to anactuator for a denominational-tabulator stop through a selected couplingto thereby move the stop to operative position and to release the stopas it arrives at said position, means for latching the stop in movedposition comprising a shoulder spring-moved into latching position andreleasable by lateral pressure on the stop; and means for restoring anymoved stops when the-carriage is at line-end or about to return.

4. In a machine of the-character described, a frame, a motor-drivenescapement-controlled carriage movable across the frame, a magazine insaid frame, a group of denominational-tabulator stops normally held insaid magazine out of carriage-stopping position, settable stops on thecarriage, actuators respectively for the denominational-tabulator stops,coupling means for selectively coupling said actuators to apower-actuated device, a plurality of denominational-stop key-leversspring held in position in the frame, means connecting said key-leversrespectively to said coupling means, a universal bar movable by saidkey-levers, a power-driven member mounted for movement by said universalban-a power-driven element adapted to be engaged by said driven member,means connecting said driven member to an actuator for adenominational-tabulator stop through a selected coupling to therebymovethe'stop to operative position, means under control of. thepower-driven member for disabling the escapement control, means forrendering the driven member ineffective .to move the stop when itarrives at operative position and a latch for assuming control of thestop at that position.

5. A tabulator-stop mechanism comprising a magazine and a blade mountedfor sliding movement in the magazine, said blade having a shoulderadapted to spring into latching position over a magazine part when movedto stop position, means for moving said blade to stop position, andmeans for unlatching the blade.

6. A tabulator-stop mechanism comprising a magazine and a blade slidablymounted in the magazine, said blade having a shoulder adapted to springinto latching position over a magazine part when moved tocarriage-stopping position, means for moving said blade tocarriagestopping position, and means including a stop on the carriageior unlatching the blade.

7. A tabulator-stop mechanism comprising a blade, means for slidablymounting said blade, means for moving said blade to a carriage-stoppingposition, a latch mechanism comprising a part in fixed relation to saidmounting means. and means for laterally .urging the blade, when moved tocarriage-stopping position, into shouldered engagement with said part.

8. A tabulator-stop mechanism comprising a blade, means for slidablymounting said blade, means ior moving said blade to a carriage-stoppingposition, a latch mechanism comprising a part in fixed relation to saidmounting means, means for laterally urging the blade, when moved tocarriage-stopping position, into shouldered engagement with said part,and carriage-operated means for engaging said blade in an oppositelateral direction for unlatching the blade.

9. A denominational tabulator mechanism comprising a frame, a group ofselectively movable blades in said frame each having a shoulder adaptedto spring into latching position with said frame when a blade is movedto carriagestopping position, means for moving .said blade selectivelyto carriage-stopping position wherein the selected blade is adapted forrelease from said shouldered engagement by impact of the carriage, and aline-endrelease device embracing all or the blades so as to beeil'ective to release the shouldered stops when the carriage. reachesthe end oi a line of travel and before return.

10. In a typewriter having a movable paper carriage, adenominational-tabulator mechanism comprising a group of selectivelymovable stops, key levers for selectively adapting said stops for poweractuation, power means for moving any adapted stop to stop position,means for latching the stops in stop position and permitting release ofa stop as the paper carriage banks against it in letter-feedingdirection, and another stop-releasing device automaticallyoperative toinsure release of all oi the stops from the latching means prior toreturn of the paper carriage. l

11. In a typewriter having a movable paper carriage, adenominational-tabulator mechanism comprising a group of selectivelymovable stops, key levers for selectively adapting said stops for poweractuation, power means for moving any adapted stop to stop position, alatching device comprising a plurality of shoulders and means for urgingthe moved stops over said shoulders and holding them there until thecarriage banks against them, and means operative at the line end ofcarriage movement to positively dislodge the stops from said shoulders.

RUSSELL G. THOMPSON.

CERTIFICATE OF comcwion. Patent No. 2, 85,7 2. I January 2, 191,9.

RUSSELL e. momrson. It is hereby certified that error appears in theprinted specification of the above'numbered patent requiring correctionas follows: Page 5, second coluxm, line 55, claim' 1;, for"power-driven" read power-drive; and that the said Letters Petent shouldbe read with this correction therein that the same may conform to therecord of the case in the Patent Office;

Signed and sealed this 50th any of January, A. 1). 191m.

Henry Van Arsdale Acting Commissioner of Patents.

